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MHC-V71/V71D
29
MOTHERBOARD Board Mount
Amplifier Diagnosis Flow (2/3)
2.
The sound i
s not outputted
Y
es
Y
es
Y
es
N
o
N
o
C
he
ck
th
at
th
e
si
gn
al
is
in
pu
t t
o I
C
20
01
p
in
2
4
an
d
25.
C
he
ck
th
at
th
e
PW
M
s
ig
na
l i
s
ou
tp
ut
te
d
fro
m
IC
20
01
p
in
3
8,
3
9, 4
0
an
d
41
.
C
he
ck t
ha
t t
he
si
gn
al
is
ou
tp
ut
te
d
fro
m I
C
20
02 p
in3
5 (
R
ig
ht
C
ha
nn
el
Sp
ea
ke
r),
p
in
3
9
(L
ef
t C
ha
nn
el
S
pe
ak
er
),
an
d p
in
27 a
nd 3
2
(S
ub
w
oo
fe
r S
pe
ak
er
).
E
xc
ha
ng
e
IC
20
01.
E
xc
ha
ng
e
IC
20
02
.
M
O
TH
ER
BO
AR
D
b
oa
rd
d
am
ag
ed
. E
xc
ha
ng
e
co
m
pl
et
e
M
O
TH
ER
BO
AR
D
bo
ar
d.
N
o
Th
e
so
un
d
is
n
ot
o
ut
pu
tte
d.
Y
es
M
O
TH
ER
BO
AR
D
b
oa
rd
d
am
ag
ed
. E
xc
ha
ng
e
co
m
pl
et
e
M
O
TH
ER
BO
AR
D
bo
ar
d.
SYS SET
2018/05/30 01:52:46 (GMT+09:00)